Let's settle this. Pixar must be creeping towards Disney-like legendary status when it comes to animation (yes I know they're really one and the same, but still). Which is the best? Its unfortunate I can't list more, but I went for what I think are the most universally popular.
If you're feeling bored enough, list yours in order, from the following:
Toy Story A Bug's Life Toy Story 2 Monsters Inc. Finding Nemo The Incredibles Cars Ratatouille WALL-E Up